Hanger for trolley-wires.



W. A. MGCALLUM.

HANGER FOR TROLLEY WIRES.

APPLIOATION FILED MAY 21, 1910.

1,047,546, Patented Dec. 17,1912.

B Cl 6.

WITNESSES: INVENTOR.

A TTORNEX COLUMBIA PLANOGRAPH c0., WASHINGTON, D. t

WILLIAM A. MoCALLUlVI, OF CINCINNATI, OHIO.

HANGER FOR TROLLEY-WIRES.

Specification of Letters Patent.

Patented Dec. 17,1912.

Application filed May 21, 1910. Serial No. 562,583.

To all whom it may concern:

Be it known that 1, WILLIAM A. MoGAL- LUM, a citizen of the UnitedStates, residing at Cincinnati, in the county of Hamilton and State ofOhio, have invented new and useful Improvements in Hangers forTrolley-Wires, of which the following is a specification.

My invention relates to hangers used to suspend the trolley wire ear orclamp from a span wire or other support in electric rallway service, andis in the nature of an improvement upon the invention covered by LettersPatent of the United States, No. 955185 granted and issued to me underdate of April 19, 1910. Said Letters Patent shows and describes a hangerconsisting of an inverted cup or bell provided with lugs or extensionsat opposite sides to engage or be engaged by a permanent support, andwithin the cup, embedded in insulating material is a fixed socket pieceopen below for the en gagement of a rotatable stem projecting outwardbelow for engaging and suspending the trolley ear.

Carrying out the leading purpose of said invention, namely: to suspendthe trolley ear in such manner as to be free to assume any radialrelation to the hanger, but simplify the construction so as to apply theinvention to the older type already in use, I employ a cup or bell,containing, as in the older type, a suspending bolt or stem, directlyand fixedly embedded in the insulating material and having a cylindricalshank projecting below, to which I attach a swiveling head with athreaded shank projecting below for engaging the trolley car.

My invention is illustrated in the accompanying drawings, in which,

Figure 1 is a side elevation of a hanger sectioned through theinsulating filling and through the swiveling head and its threadedshankthe embedded stem being shown unsectioned; Fig. 2 is a perspectiveof the em bedded stem or bolt detached; and Fig. 3 is a perspectiveelevation of the swiveling head and its threaded extension, detached.

Referring now to the drawings: A designates the cup or bell of thehanger; a, a, its lateral arms formed to engage and support in thiscase-a span-wire; and B the insulating filling which is pressed in whilein a semi-plastic condition, over and upon ridges or ribs of the innerwall of the cup, and

.ing a circumferential groove 0 cut therein.

D designates a head which, with its projecting threaded stem d below,constitutes What may be properly called a suspending bolt for thetrolley ear E which engages the trolley wire 6. The head D iscountersunk axially to receive the cylindrical shank c in a closerotating fit, being held in place by I pins, p, 29, projecting throughthe head D at opposite sides into the circumferential groove 0 The lowerextension cl of the head D is threaded to enter and engage the boss ofthe ear E in the usual manner, as shown in Fig. 1, by rotating the headD with a wrenchto which end the head D is provided with plane faces asshown. By this means the ear is drawn tight against the lower face ofthe head D, but the latter still maintains a rotative connection withthe hanger through the shank c of the embedded stem C, and thus whilesuspending the ear E leaves it free to assume any horizontal positionrequired by the trolley wire in relation to the span wire or othersupport. Thus while the resulting functional advantage is substantiallythe same as in my former invention herein referred to, it possesses theadvantage of simpler and cheaper construction with movable parts allexternal and accessible for examination, repair, etc, and moreover, maybe applied to existing hangers having embedded bolts, by changes easilymade.

While herein shown as applied to hangers of the insulating type, it willbe obvious that the invention is not necessarily confined thereto; butis applicable to others as well.

I claim as my invention and desire to secure by Letters Patent of theUnited States:

1. A trolley-wire hanger embodying, in combination, an inverted cup orbell provided with means for engaging a fixed support and with a metalstem extended below the same, having a cylindrical terminal; and asupplemental stem, provided at the upper end with a socketed headadapted to receive and closely embrace the said cylindrical terminal ina rotative engagement preventing vertical or lateral intermovement, saidsupplemental stem having a threaded ter minal adapted to engage therebya trolleyear or clamp by the exclusive rotation of the supplementalstem.

2. In a trolley wire hanger an inverted cup or bell provided with meansfor engaging a fixed support, a filling of solidified insulatingmaterial in the cavity of said bell, a metallic stem fixedly embedded inand projecting below said filling, and a socketed head adapted toreceive and closely embrace the said cylindrical terminal in a rotativeIn testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

WILLIAM A. MOCALLUM. Witnesses:

LEWIS M. HosEA, A. L. TILDESLEY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents Washington, I). G.

